[OpenBIOS] [PATCH] drivers/escc.c: Add slot-names property ch-a node under escc

[Tarl Neustaedter]

On 2016-Feb-9 11:45 , BALATON Zoltan wrote:
> On Tue, 9 Feb 2016, BALATON Zoltan wrote:
>> modem as well. Not sure what should it say for just a serial port.
>> Maybe none or serial instead of modem.
>
> What if you just put four zero bytes in slot-names? But you may still
> need working DMA added.

I don't know if that works for Apple, but it shouldn't. From the PCI
binding:

    "slot-names" S prop-name, describes external labeling of add-in slots.

    prop-encoded-array: An integer, encoded as with encode-int, followed
    by a list of strings, each encoded as with encode-string.

    The integer portion of the property value is a bitmask of available
    slots; for each add-in slot on the bus, the bit corresponding to
    that slot's Device Number is set. The least-significant bit
    corresponds to Device Number 0, the next bit corresponds to Device
    Number 1, etc. The number of following strings is the same as the
    number of slots; the first string gives the label that is printed on
    the chassis for the slot with the smallest Device Number, and so on.

That is, the first four bytes are supposed to be an integer (in binary)
indicating how many names follow, each name null-terminated. The usual
case for this properly is that you see 0x00, 0x00, 0x00, 0x01, <string>,
0x00.

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